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Date: Tue, 18 Dec 2012 20:17:33 +0000
From: RW <rwmaillists@googlemail.com>
To: freebsd-questions@freebsd.org
Subject: Re: using AWK
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On Mon, 17 Dec 2012 08:16:26 -0800
Devin Teske wrote:

> 
> On Dec 17, 2012, at 3:39 AM, Jack Mc Lauren wrote:
> 
> > Hi guys
> > 
> > How can I read a file which contains a number and assign that
> > number to a variable via awk programming? By the way, I want to use
> > this awk program in a shell script.
> > 
> > Thanks in advance
> 
> Try this:
> 
> awk -v file=/etc/ttys 'BEGIN { getline line <file; printf "First line
> from %s: %s\n", file, line }'
> 
Semms a bit complicated when you could set the awk variable directly
e.g.

$ echo 42 > /tmp/f
$ awk -v x=`cat /tmp/f`  'BEGIN{ print x+1 }'
43